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The characteristics of scatting and extinction spectra of gold nanoshell pairs, dependent on the its geometry and physical parameters, are investigated by the Finite Element Method based on the plasmon hybridization theory. The numerical results indicate that the resonante peaks in the scattering spectra and the extinction spectra emerge from blue-shift to red-shift with the increases of the thickness of gold nanoshells, whereas they present the red-shift with the decrease of the interparticle separation or with the increases of the size and the refractive index of inner core of gold nanoshells. In the same time, for the case of decreasing the inner core size and the shell thickness or increasing the refractive index of inner core, the intensity of the scattering resonance and the extinction resonance decrease. And, with the decrease of the interparticle separation, the intensity of the scattering resonance of gold nanoshell pairs trends to first increase and then decrease, while the intensity of the extinction resonance increases gradually. All the above is in agreement with the analysis of the plasmon hybridization theory.
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Keywords:
- gold nanoshell pairs /
- plasmon resonance /
- plasmon hybridization theory /
- FEM
[1] Kelly K L, Coronado E, Zhao L L, Schatz G C 2003 J. Phys. Chem. B 107 668
[2] Link S, El-Sayed M A 1999 J. Phys. Chem. B 103 8410
[3] Jain P K, El-Sayed M A 2007 Phys. Chem. C Lett. 111 17451
[4] Cao M, Wang M, Gu N 2009 J. Phys. Chem. C 113 1217
[5] Talley C E, Jackson J B, Oubre C, Grady N K, Hollars C W, Lane S M, Huser T R, Nordlander P, Halas N J 2005 Nano. Lett. 5 1569
[6] Zhang H X, Gu Y, Gong Q H 2008 Chin. Phys. B 17 2567
[7] Zhou J, Zhang X Y, Yonzon C R, Haes A J, Van Duyne R P 2006 Nanomedicine 1 219
[8] Larsson E M, Alegret J, Kall M, Sutherland D S 2007 Nano. Lett. 7 1256
[9] Haes A J, Hall W P, Chang L, Klein W L, Van Duyen R P 2004 Nano. Lett 4 1029
[10] Zhou S, Honma HSI, Komiyama H 1994 Phys. Rev. B 50 12052
[11] Nehi C L, Grady N K, Goodrich G P, Tam F, Halas N J, Hafner J H 2004 Nano. Lett. 4 2355
[12] Prodan E, Radloff C, Halas N J, Nordlander P 2003 Science 302 419
[13] Wu D J, Liu X J 2008 Acta Phys. Sin. 57 5138 (in Chinese) [吴大建, 刘晓峻 2008 物理学报 57 5138]
[14] Brandl D W, Oubre C, Nordlander P 2005 J. Chem. Phys. 123 024701
[15] Lassiter J B, Aizpurua J, Hernandez L I, Brandl D W, Romero I, Lal S, Hafner J H, Nordlander P, Halas N J 2008 Nano Lett. 8 1212
[16] Khoury C G, Norton S J, Vo-Dinh T 2009 ACS Nano 3 2776
[17] Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370
[18] Prodan E, Nordlander P 2004 J. Chem. Phys. 120 5444
[19] Wu D J, Liu X J 2009 Appl. Phys. B 97 193
[20] Nordlander P, Oubre C 2004 Nano. Lett. 4 899
[21] Knight M W, Halas N J 2008 New J. Phys. 10 105006
[22] Stratton J 1941 Electromagnetic Theory (New York: McGraw-Hill)
[23] Grady N K, Halas N J, Nordlander P 2004 Chem. Phys. Lett. 399 167
[24] Zuloaga J, Prodan E, Nordlander P 2009 Nano. Lett. 9 887
[25] Prodan E, Lee A, Nordlander P 2002 Chem. Phys. Lett. 360 325
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[1] Kelly K L, Coronado E, Zhao L L, Schatz G C 2003 J. Phys. Chem. B 107 668
[2] Link S, El-Sayed M A 1999 J. Phys. Chem. B 103 8410
[3] Jain P K, El-Sayed M A 2007 Phys. Chem. C Lett. 111 17451
[4] Cao M, Wang M, Gu N 2009 J. Phys. Chem. C 113 1217
[5] Talley C E, Jackson J B, Oubre C, Grady N K, Hollars C W, Lane S M, Huser T R, Nordlander P, Halas N J 2005 Nano. Lett. 5 1569
[6] Zhang H X, Gu Y, Gong Q H 2008 Chin. Phys. B 17 2567
[7] Zhou J, Zhang X Y, Yonzon C R, Haes A J, Van Duyne R P 2006 Nanomedicine 1 219
[8] Larsson E M, Alegret J, Kall M, Sutherland D S 2007 Nano. Lett. 7 1256
[9] Haes A J, Hall W P, Chang L, Klein W L, Van Duyen R P 2004 Nano. Lett 4 1029
[10] Zhou S, Honma HSI, Komiyama H 1994 Phys. Rev. B 50 12052
[11] Nehi C L, Grady N K, Goodrich G P, Tam F, Halas N J, Hafner J H 2004 Nano. Lett. 4 2355
[12] Prodan E, Radloff C, Halas N J, Nordlander P 2003 Science 302 419
[13] Wu D J, Liu X J 2008 Acta Phys. Sin. 57 5138 (in Chinese) [吴大建, 刘晓峻 2008 物理学报 57 5138]
[14] Brandl D W, Oubre C, Nordlander P 2005 J. Chem. Phys. 123 024701
[15] Lassiter J B, Aizpurua J, Hernandez L I, Brandl D W, Romero I, Lal S, Hafner J H, Nordlander P, Halas N J 2008 Nano Lett. 8 1212
[16] Khoury C G, Norton S J, Vo-Dinh T 2009 ACS Nano 3 2776
[17] Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370
[18] Prodan E, Nordlander P 2004 J. Chem. Phys. 120 5444
[19] Wu D J, Liu X J 2009 Appl. Phys. B 97 193
[20] Nordlander P, Oubre C 2004 Nano. Lett. 4 899
[21] Knight M W, Halas N J 2008 New J. Phys. 10 105006
[22] Stratton J 1941 Electromagnetic Theory (New York: McGraw-Hill)
[23] Grady N K, Halas N J, Nordlander P 2004 Chem. Phys. Lett. 399 167
[24] Zuloaga J, Prodan E, Nordlander P 2009 Nano. Lett. 9 887
[25] Prodan E, Lee A, Nordlander P 2002 Chem. Phys. Lett. 360 325
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